The Austrian authorities have completed their investigation into the skiing accident which left Dutch prince Friso in a coma for the past six months, according to media reports.

The report has been sent by local officials to the public prosecution department but nothing further is known about its contents or if anyone will face legal action, news agency ANP said.

Prince Friso was hit by an avalanche while out skiing off-piste with friend and guide Floriaan Moosbrugger on February 17. He was unconscious for some 50 minutes and has been in a coma ever since suffering from severe brain damage. He is being cared for at a hospital in London.